ispring embedding code not working

I am trying to embed a site from ispring onto my wix site, but it doesn’t work. It seems to work with every other platform but wix. Is there something that wix needs in my embedding code?
I am not too advanced in this, but wix support spent 30 minutes trying to see what the issue was and quickly gave up… ispring says the code is good… what is wrong? Can someone help me?

Wix doesn’t provide support for any code that comes from a third party provider as they haven’t fully tested etc.

Also, certain elements within html are not allowed when simply using Wix free.

https://support.wix.com/en/article/about-importing-data-in-the-data-manager

Once I upgrade my account to e-commerce do you think it will work? I was setting everything up!